mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-16 08:06:17 +09:00
f418676e9a
Add remove() methods for EDP and VOP so that U-Boot can shut down the video on exit. This avoids leaving DMA running while booting Linux which can cause problems if Linux uses the frame buffer for something else. It also makes it clear what is needed to shut down video. While we are here, make rkvop_enable() static. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de> Squashed in 'rockchip: video: fix taking the VOP device out of standby': Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/*
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* Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
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* Copyright (c) 2015 Google, Inc
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* Copyright 2014 Rockchip Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <display.h>
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#include <dm.h>
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#include <regmap.h>
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#include <syscon.h>
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#include <video.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/grf_rk3288.h>
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#include "rk_vop.h"
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DECLARE_GLOBAL_DATA_PTR;
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static void rk3288_set_pin_polarity(struct udevice *dev,
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enum vop_modes mode, u32 polarity)
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{
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struct rk_vop_priv *priv = dev_get_priv(dev);
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struct rk3288_vop *regs = priv->regs;
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/* The RK3328 VOP (v3.1) has its polarity configuration in ctrl0 */
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clrsetbits_le32(®s->dsp_ctrl0,
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M_DSP_DCLK_POL | M_DSP_DEN_POL |
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M_DSP_VSYNC_POL | M_DSP_HSYNC_POL,
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V_DSP_PIN_POL(polarity));
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}
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static void rk3288_set_io_vsel(struct udevice *dev)
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{
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struct rk3288_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
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/* lcdc(vop) iodomain select 1.8V */
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rk_setreg(&grf->io_vsel, 1 << 0);
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}
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/*
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* Try some common regulators. We should really get these from the
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* device tree somehow.
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*/
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static const char * const rk3288_regulator_names[] = {
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"vcc18_lcd",
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"VCC18_LCD",
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"vdd10_lcd_pwren_h",
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"vdd10_lcd",
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"VDD10_LCD",
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"vcc33_lcd"
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};
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static int rk3288_vop_probe(struct udevice *dev)
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{
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/* Before relocation we don't need to do anything */
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if (!(gd->flags & GD_FLG_RELOC))
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return 0;
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/* Set the LCDC(vop) iodomain to 1.8V */
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rk3288_set_io_vsel(dev);
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/* Probe regulators required for the RK3288 VOP */
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rk_vop_probe_regulators(dev, rk3288_regulator_names,
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ARRAY_SIZE(rk3288_regulator_names));
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return rk_vop_probe(dev);
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}
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static int rk_vop_remove(struct udevice *dev)
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{
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struct rk_vop_priv *priv = dev_get_priv(dev);
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struct rk3288_vop *regs = priv->regs;
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setbits_le32(®s->sys_ctrl, V_STANDBY_EN(1));
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/* wait frame complete (60Hz) to enter standby */
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mdelay(17);
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return 0;
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}
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struct rkvop_driverdata rk3288_driverdata = {
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.features = VOP_FEATURE_OUTPUT_10BIT,
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.set_pin_polarity = rk3288_set_pin_polarity,
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};
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static const struct udevice_id rk3288_vop_ids[] = {
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{ .compatible = "rockchip,rk3288-vop",
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.data = (ulong)&rk3288_driverdata },
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{ }
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};
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static const struct video_ops rk3288_vop_ops = {
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};
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U_BOOT_DRIVER(rk_vop) = {
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.name = "rk3288_vop",
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.id = UCLASS_VIDEO,
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.of_match = rk3288_vop_ids,
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.ops = &rk3288_vop_ops,
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.bind = rk_vop_bind,
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.probe = rk3288_vop_probe,
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.remove = rk_vop_remove,
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.priv_auto_alloc_size = sizeof(struct rk_vop_priv),
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};
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